Improvement in ventilators for windows



N0.171,68Z. Patented Jan.4,1876.

Pairzlok JIM/r1 71/.

N.FETERS, PHOTO-UTHOGRAPNER. WASHINGTON. D. C.

UNITED, STATES;

PATENT QF IOE.

PATRICK MIHAN, OF GAMBRIDGEPORT, MASSACHUSETTS.

IMPROVEMENT IN VENTILATORS FoR wmnows.

Specification forming part of Letters Patent No. 171,682, dated January4, 1876; application filed October 14, 1875.

To all whom it may concern Be it known that I, PATRICK MIHAN, of(Jambridgeport, in the county of Middlesex and State of Massachusetts,have invented a new and useful Ventilator, or device to be applied to awindow for ventilating a room or apartment; and I do hereby declare thatthe following is a full, clear, and exact description thereof, whichwill enable others skilled in the art to which it pertains to make anduse the same, reference being bad to the accompanying drawing, and tothe letters of reference marked thereon, which form a part of thisspecification.

1n the said drawing, Figure 1. is a front (outside) elevation of awindow provided with-my invention, the same representing the window asclosed and the ventilator not in operation. Fig. 2 is a similar view,showing the window as partially open and the ventilator in operation.Fig. 3 is a central vertical and transverse section taken on line :10 mof Fig. 2, and representing the parts in the position as shown in saidlatter figure.

, The object of my invention is to provide a simple, cheap, andeffective device, and one which can be readily applied to a window, forthe purpose of ventilating a room or apartment; and my inventionconsists in the peculiar construction and arrangement of the parts ofthe said device, and its application to a window-frame and window, ashereinafter described and claimed.

In the said drawing, A A denote the window-frame, and B B the upper andlower sashes. Within the upper part of the windowframe, and attached toopposite sides thereof, is an upwardly inclined metallic plate, 0. Thisplate extends beyond the inner face of the frame, and is there curvedupward, so as to cause the currents of air entering between the top ofthe window-frame and the said plate, to be deflected upward toward theceiling of the room. This plate I make in two sections, a b, the part abeing movable and hinged to the part I), such part at having a widthsufficient to lap upon the top rail of the upper sash when the latter islowered, as shown in Figs. 2 and 3, the same serving to cover the jointformed with the sash, and thus convey away any rain or water that may bedriven into theventilator to'the outside of the sash, while such hingedportion also enables the sash to be either raised or lowered withoutobstructing or impeding its movement. d is a flat curved spring, one endof which is secured to the top'of the stationary part b of theventilator, itsother or free end impinging against the part a, theobject of such spring being to maintain the part a in impingement withthe sash at all points within the limits of movement of the former.

This ventilator is to be arranged at a short distance below the upperbar of the windowframe, and at such an angle of inclination therewiththat when opened to its greatest extent, as shown, Figs.2 and 3, it willallow the maximum amount of air desired to enter the room, while, bysimply raising the upper sash more or less, the amount of air admittedmay be regulated with the greatest nicety.

I would remark that the spring d may be dispensed with, by simply givingto the part a such weight that it will fall by its own gravity.

In some instances I make the curved plate 0 of a single piece, in whichcase I make the rear edge thereof to stand in the same vertical planewith the adjacent face of the sash, so that, as the latter is movedeither upward or downward, it shall impinge against the edge of theventilator or plate G, the same being as shown in Fig. 4; but I preferto make same in two parts, as before described.

From the above it will be seen that, by my construction of theventilator and its application to the window of a room, the currents ofair, as they enter the room, are prevented from that downward rush whichso often occurs when a window (unprovided with a ventilator) is open atits top, and which have such deleterious effects, especially in sleepingrooms, my invention causing the inflowing air to be deflected upwardtoward the ceiling, from whence it descends almost imperceptibly by itsown gravity.

I do not claim the invention as shown and described in Letters PatentNo. 106,940, nor that found in Patent No. 150,463, as my inventiondiffers both in construction and arrangement from either of them.

Having described my invention, what .I claim is- Y ,luThe ventilatorconsisting of the single curved plate 0, arrangedat or near 'the top ofthe window, as shown and described, to operate with the upper sashthereof, as and. forthe purpose set forth.

2. The wentila orlcompo of two s c s, a b, hinged together, as stated,in combination with a window-frame and window, substantially as shownand described.

3. The combination, with the ventilator composed of two parts, a b,hinged together, as stated, ot the spring d, as andi'or the purpose setforth.

In testimony that I claim the foregoing as my own invention I affix mysignature in presenc of two Wi ne ses- PATRICK MIHAN.

Witnesses:

F. P. HALE, F. O. HALE.

